*tb 9-4931-523-24

_________ *This bulletin supersedes TB 9-4931-523-24, dated 23 April 2013.

*TB 9-4931-523-24 CALIBRATION PROCEDURE FOR

ATTENUATORS, FIXED AND VARIABLE (10 MHz TO 26.5 GHz) (GENERAL)

Headquarters, Department of the Army, Washington, DC 3 January 2014

Distribution Statement A: Approved for public release; distribution is unlimited. REPORTING OF ERRORS AND RECOMMENDING IMPROVEMENTS

You can improve this manual. If you find any mistakes or if you know of a way to improve these procedures, please let us know. Mail your letter or DA Form 2028 (Recommended Changes to Publications and Blank Forms) directly to: Commander, U.S. Army Aviation and Missile Command, ATTN: AMSAM-MSS-LP, Redstone Arsenal, AL 35898-5000. A reply will be furnished to you. You may also send in your comments electronically to our E-mail address: [email protected] or by fax 256-842-6546/DSN 788-6546. For the World Wide Web use: https://amcom2028.redstone.army.mil. Instructions for sending an electronic 2028 can be found at the back of this manual.

Paragraph Page SECTION I. IDENTIFICATION AND DESCRIPTION

Test instrument identification ............................... 1 2 Forms, records, and reports ................................... 2 2 Calibration description ........................................... 3 2 II. EQUIPMENT REQUIREMENTS Equipment required ............................................... 4 2 Accessories required ............................................... 5 2 III. CALIBRATION PROCESS Preliminary instructions ........................................ 6 3 Equipment setup .................................................... 7 3 Fixed attenuation measurement

(10 MHz to 26.5 GHz) ...........................................

8 4

Variable attenuation measurement (10 MHz to 26.5 GHz) ...........................................

9

5

Final procedure ....................................................... 10 6 APPENDIX A TEST INSTRUMENT IDENTIFICATION A-1

TB 9-4931-523-24

2

SECTION I IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification. This procedure provides instructions for the calibration of Attenuators, Fixed and Variable (10 MHz to 26.5 GHz) (General). The manufacturers' manuals were used as the prime data sources in compiling these instructions. The equipment being calibrated will be referred to as the TI (test instrument) throughout this bulletin.

a. Model Variations. Variations among models are described in appendix A.

b. Time and Technique. The time required for this calibration is approximately 2 hours using the dc and low frequency technique.

2. Forms, Records, and Reports. Forms, records, and reports required for calibration personnel at all levels are prescribed by TB 750-25.

3. Calibration Description. TI parameters and performance specifications that pertain to this calibration are listed in appendix A. TIs other than those listed in the appendix may be checked using the techniques in this TB if the manufacturers' specifications are available.

SECTION II EQUIPMENT REQUIREMENTS

4. Equipment Required. Table 1 identifies the specific equipment to be used in this calibration procedure. This equipment is issued with Secondary Transfer Calibration Standards Set, AN/GSM-286; AN/GSM-287; or AN/GSM-440 and Secondary Reference Calibration Standards Set, NSN 4931-00-621-7878. Alternate items may be used by the calibrating activity. The items selected must be verified to perform satisfactorily prior to use and must bear evidence of current calibration. The equipment must meet or exceed the minimum use specifications listed in table 1. The accuracies listed in table 1 provide a four-to-one ratio between the standard and TI. Appendix A is footnoted where the four-to-one ratio may not be met.

5. Accessories Required. The accessories required for this calibration are common usage accessories issued as indicated in paragraph 4 above, and are not listed in this calibration procedure.

Table 1. Minimum Specifications of Equipment Required.

Common name Minimum use specifications Manufacturer and model

(part number) MEASURING RECEIVER Frequency measurement:

Range: 10 MHz to 26.5 GHz Accuracy: ±0.5% Power measurement: Frequency: 250 kHz to 26.5 MHz Range: +10 dB to -113 dB Accuracy: ±0.125 dB

Measuring receiver system N5531S consisting of: Spectrum Analyzer, Agilent Model E4440A (E4440A), Power meter, Agilent Model E4419B (E4419B), or Power meter, Agilent Model N1911A (N1911A) and Sensor modules, Agilent Model N5532A opt. 504 (504), 518 (518), 526 (526)

TB 9-4931-523-24

3

Table 1. Minimum Specifications of Equipment Required – Continued

Common name Minimum use specifications Manufacturer and model (part number)

POWER SENSOR Frequency range: 10 MHz to 26.5 GHz Power range: 0 to -70 dBm Accuracy: ±dB/10 dB

Agilent, Model E9304AH18 (E9304AH18), and power sensor, Agilent, Model 8485D (8485D) with 30 dB attenuator, Agilent, Model 11708A (11708A)

POWER SPLITTER Frequency range: 10 MHz to 26 GHz Insertion loss: 6 dB -0.2 + 1.5 dB

Anritsu, Model K241C (K241C)

SYNTHESIZED SIGNAL GENERATOR

Frequency range: 0.01 to 26.5 GHz Power output: +8 dBm, ±1dB

Anritsu, Model 68369NV (68369NV)

SECTION III CALIBRATION PROCESS

6. Preliminary Instructions

a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration process. Personnel should become familiar with the entire bulletin before beginning the calibration.

b. Items of equipment used in this procedure are referenced within the text by common name as listed in table 1.

c. This calibration bulletin contains information and techniques for the calibration of attenuators from 10 MHz to 26.5 GHz.

d. Attenuators with specifications below 10 MHz should use the techniques presented in TB 9-6625-2181-24.

7. Equipment Setup

a. Refer to TI as listed in appendix and evaluate TI for connector type, impedance, and frequency range. Determine and record at least 10 equally spaced frequency test points.

NOTE The calibration frequencies attached to TI or test report furnished with TI may be used if desired.

b. Refer to TI type and frequency range for performance paragraph as listed in (1) through (2) below:

(1) Fixed attenuator with frequency range between 10 MHz and 26.5 GHz refer to d below.

(2) Variable attenuator with frequency range between 10 MHz and 26.5 GHz refer to d below.

NOTE The insertion loss measurements for attenuators listed in the appendix are considered adequate for determining their accuracy and serviceability.

TB 9-4931-523-24

4

NOTE

Unless otherwise specified, verify the results of each test and, whenever the test requirement is not met, take corrective action before continuing with the calibration.

c. Connect sensor modules to the power reference output. Perform sensor zero and calibration.

d. Connect equipment as shown in figure 1 and allow equipment to warm up for 1 hour before performing paragraph 8 or 9 below.

Figure 1. Attenuation Measurement (10 MHz To 26.5 GHz Equipment Setup).

8. Fixed Attenuation Measurement (10 MHz to 26.5 GHz)

a. Performance Check

NOTE The frequency range of the TI will determine which sensor module is used. 504: 100 kHz – 4.2 GHz, 518: 10 MHz – 18 GHz, 526: 30 MHz – 26.5 GHz.

TB 9-4931-523-24

5

NOTE Verify the proper Cal Factors are loaded for the power sensor module being utilized.

NOTE Ensure measuring receiver measurement accuracy is set to high.

(1) Adjust signal generator frequency controls to the first test frequency recorded in 7 a above and adjust output for 0.0 dBm.

(2) Configure measuring receiver for tuned RF level measurements and manually enter carrier frequency into measuring receiver. Record reading as reference.

(3) Adjust signal generator output in 10 dBm steps to -70 dBm. Allow the measuring receiver to acquire the signal at each level.

NOTE Use adapters as needed.

NOTE Use 50 Ω to 75 Ω or 50 Ω to 93 Ω adapters when TI is 75 Ω or 93 Ω.

(4) Adjust signal generator output for 0.0 dBm indication on measuring receiver.

(5) Configure measuring receiver in the ratio mode.

(6) Connect the attenuator at the TI INSERTION POINT as shown in figure 1.

(7) Measure and record measuring receiver indication. Measured attenuation will be within range and accuracies specified in appendix A for TI being calibrated.

NOTE When calibrating a set of attenuators test each attenuator in the set at each test frequency before setting a new reference frequency.

(8) Repeat steps (1) through (7) above for remaining test frequencies recorded in 7 a above.

b. Adjustments. No adjustments can be made; however, a correction chart may be prepared listing actual measuring receiver indications at frequencies of interest.

9. Variable Attenuation Measurement (10 MHz to 26.5 GHz)

a. Performance Check

NOTE The frequency range of the TI will determine which sensor module is used. 504: 100 kHz – 4.2 GHz, 518: 10 MHz – 18 GHz, 526: 30 MHz – 26.5 GHz.

NOTE Verify the proper Cal Factors are loaded into the controller for the power sensor module being utilized.

TB 9-4931-523-24

6

NOTE Ensure measuring receiver measurement accuracy is set to high.

(1) Adjust signal generator frequency controls to the first test frequency recorded in 7 a above and adjust output for 0.0 dBm.

(2) Configure measuring receiver for tuned RF Level measurements and manually enter carrier frequency into measuring receiver. Record reading as reference.

(3) Adjust signal generator output in 10 dBm steps to -70 dBm. Allow the measuring receiver to acquire the signal at each level.

NOTE Use adapters as needed.

NOTE Use 50 Ω to 75 Ω or 50 Ω to 93 Ω adapters when TI is 75 Ω or 93 Ω.

(4) Adjust signal generator output for 0.0 dBm indication on measuring receiver.

(5) Configure measuring receiver in the ratio mode.

(6) Connect the attenuator at the TI INSERTION POINT as shown in figure 1.

(7) Measure and record measuring receiver indication as insertion loss. Measured attenuation will be within range and accuracies specified in appendix A, insertion loss column, for TI being calibrated.

(8) Increase TI attenuation setting in one step increments (or one cardinal point as desired.)

(9) Measure and record measuring receiver indication. Measured attenuation will be within range and accuracies specified in appendix A for TI being calibrated.

(10) Repeat steps (1) through (9) above for remaining test frequencies recorded in 7 a above.

b. Adjustments. No adjustments can be made; however, a correction chart may be prepared listing actual measuring receiver indications at frequencies of interest.

10. Final Procedure

a. Deenergize and disconnect all equipment.

b. Annotate and affix DA label/form in accordance with TB 750-25. For models with frequency ranges above 26.5 GHz, affix DA label 163 denoting calibration only to 26.5 GHz.

TB 9-4931-523-24

APPENDIX A

A-1

TEST INSTRUMENT IDENTIFICATION

Model Number Manufacturer Nominal

attenuation (dB)

Frequency range (GHz)1

Accuracy (dB)

Insertion loss at 0 dB (dB)

A200302 Weinschel 10 DC to 18 DC to 12.4 ±0.3 12.4 to 18 ±0.5

A2648B2

(MIS-10263) RLC

Electronics 0 to 1203 DC to 1

DC to 0.1 ≤0.25 0.1 to 0.5 ≤0.75 0.5 to 1 ≤1.50

0 to 60 DC to 0.01 ±0.154 60 to 1203 ±0.30

0 to 60 0.01 to 0.1 ±0.355 60 to 1203 ±0.705 0 to 1203 0.1 to 1 ±3.0

AB20B Microlab/FXR 20 DC to 4.5 DC to 3 ±0.7 3 to 4.5 ±1.0

AB30N Microlab/FXR 30 DC to 4.5 DC to 3 ±0.7 3 to 4.5 ±1.0

AC20N Microlab/FXR 20 DC to 3 ±1.2 AD06N Microlab/FXR 6 3 to 4.5 ±0.6 AC119A-99-33 Weinschel 0 to 99 DC to 18 ±0.05

1 to 9 DC to 18 ≤0.510 to 19 DC to 18 ≤1.020 to 29 DC to 18 ≤1.230 to 39 DC to 18 ≤1.440 to 49 DC to 18 ≤1.550 to 59 DC to 18 ≤1.760 to 69 DC to 18 ≤1.970 to 79 DC to 18 ≤2.180 to 89 DC to 18 ≤2.390 to 99 DC to 18 ≤2.5

AF117A69-342 Weinschel 0 to 69 DC to 18 ≤1.2 1 to 9 DC to 18 ±0.5

10 to 19 DC to 18 ±1.0 20 to 29 DC to 18 ±1.2 30 to 39 DC to 18 ±1.4 40 to 49 DC to 18 ±1.5 50 to 59 DC to 18 ±1.7 60 to 69 DC to 18 ±1.8

AN9444-3 Arra 3 DC to 18 ±0.3 AN9444-6 Arra 6 DC to 18 ±0.3 AS1 Weinschel See Weinschel 50-3, 50-6, 50-10, 50-20, and 210-3, 210-6, 210-10, 210-20 AS4 Weinschel See Weinschel 50-3, 50-6, 50-10, 50-20, and 530A-3, 530A-6, 530A-10,

530A-20 AS5 Weinschel See Weinschel 1-3, 1-6, 1-10, 1-20 AS5A Weinschel See Weinschel 1-3, 1-6, 1-10, 1-20 AS6 Weinschel See Weinschel 2-3, 2-6, 2-10, 2-20 AS6A Weinschel See Weinschel 2-3, 2-6, 2-10, 2-20

See footnotes at end of table.

TB 9-4931-523-24

APPENDIX A

A-2

TEST INSTRUMENT IDENTIFICATION – Continued

Model number Manufacturer Nominal

attenuation (dB)


Accuracy (dB)


AT201SR2 RLC Electronics

0 to 1203 DC to 1 DC to 0.2 ±0.5 or 2%

whichever is greater

0.25 to 0.5 ±0.5 or 3% whichever is

greater 0.5 to 1.0 ±0.5 or 5%


CN713U 0 to 20 4.4 to 5 ±2.0 CN797U PRD

Electronics 10 2.0 to 10 ±0.12

CN895 Cessna Aircraft 20 DC to 1 ±0.5 CN908U Hewlett-

Packard See Hewlett-Packard G382A

CN970U Hewlett-Packard

See Hewlett-Packard 355C

FP50 Trilithic 0 to 20 21 to 60 0 to 20 0 to 20

DC to 0.5 DC to 0.5 0.5 to 1 1 to 2

±0.3 ±3.0% ±0.5 ±1.0

G382A Hewlett-Packard

0 to 50 3.95 to 5.85 ±0.1 or ±2% whichever is

greater

GGLFHN100 PRD Electronics

20 6 ±1.0

H101 PRD Electronics

0 to 60 7.05 to 10 ≤0.5

0 to 50 0 ±1 or ±2% whichever is

greater

50 to 60

H101SH PRD Electronics

See Hl0l

H175A20DB Microlab/FXR 20 3.95 to 5.85 ±0.5 H382A Hewlett-

Packard 0 to 50 7.05 to 10.0 ±0.1 or ±2%


≤1.0

K175AFl0DB Microlab/FXR 10 18 to 26.5 ±0.3 K375A Hewlett-

Packard 0 to 20 18 to 26.5

0 to 10 ±1.0 10 to 20 ±2.0


TB 9-4931-523-24

APPENDIX A

A-3

TEST INSTRUMENT IDENTIFICATION - Continued


attenuation (dB)


Accuracy (dB)


K382A Hewlett-Packard

0 to 50 18 to 26.5 ±0.1 or ±2% whichever is

greater

≤1.0

MDC1078S-3 Midisco 3 DC to 3 3 ±0.3

MDC1078S-6 Midisco 6 DC to 18 ±0.3 MDC5078S-10 Midisco 10 DC to 18 ±0.5 MDC5078S-20 Midisco 20 DC to 18 ±0.7 MDC5078S-3 Midisco 3 DC to 18 ±0.3 MDC5078S-6 Midisco 6 DC to 18 ±0.3 MDC88014-10 Midisco 10 DC to 12.4

DC to 6 ±0.2 6 to 12.4 ±0.4

MIS-10263 See RLC Electronics

A2648B

MIS-38936 Telonic Berkeley

0 to 1203 DC to 1 ≤3.0 0 to 120 DC to 0.01 ±0.30 0 to 60 0.01 to 0.1 ±0.355

60 to 120 ±0.705

0 to 120 0.1 to 1 ±3.00 0 to 60 DC to 0.01 ±0.055, 6

0.01 to 0.1 ±0.105, 6 0.1 to 1 ±0.756

N9412-10 Arra Inc 10 DC to 18 DC to 12 ±1.0 12 to 18 ±2.0

N9412-20 Arra Inc 20 DC to 18 DC to 12 ±1.5 12 to 18 ±2.0

P382A Hewlett-Packard

0 to 50 12.4 to 18 ±0.1 or ±2% whichever is

greater

≤1.0

R382A Hewlett-Packard

0 to 50 26.5 to 40 ±0.1 or ±2% whichever is

greater

≤1.0

RFB551-50 Meggitt Avionics

0 to 80 DC to 0.225 ±1.6


TB 9-4931-523-24

APPENDIX A

A-4



attenuation (dB)


Accuracy (dB)

Insertion loss at 0 dB

(dB) TAD50A Telonic 0 to 110 DC to 0.9

0 to10 0.03 ±0.15 ≤0.10.4 ±0.3 ≤0.50.9 ±0.5 ≤0.7

11 to 110 0.03 ±3% + 0.15 dB 0.4 ±5% + 0.3 dB 0.9 ±8% + 0.5 dB

TG950A Telonic 0 to 102 DC to 0.3 ≤0.8 dB/100 MHz

DC to 0.05 0.05 or ±1% whichever is

greater

0.05 to 0.2 0.2 or ±1% whichever is

greater 0.2 to 0.3 ±0.5/step

TG950X9 Telonic See TG950A U175AFl0DB Microlab/FXR 10 26.5 to 40 ±0.3 V727 Narda 0 to 20 26.5to 40 ≤0.5

0 to 10 ±1.0 10 to 20 ±1.5

W175A20DB Microlab/FXR 20 7.05 to 10 ±0.5 X175A10DB Microlab/FXR 10 8.2 to 12.4 ±0.3 Xl75A20DB Microlab/FXR 20 8.2 to 12.4 ±0.5 X370B Hewlett-

Packard 6 8.2 to 12.4 ±20%

X370C Hewlett-Packard

10 8.2 to 12.4 ±20%

X382A (7909033)

Hewlett-Packard

10 to 50 8.2 to 12.4 ±0.1 or ±12.4% whichever is

greater

≤1.0

Y175A10DB Microlab/FXR 10 12.4 to 18 ±0.3 Y175A20DB Microlab/FXR 20 12.4 to 18 ±0.5 011-0085-00 Tektronix 10 DC to 12.4 ±1.0 011-0086-00 Tektronix 20 DC to 12.4 ±1.0 011-0087-00 Tektronix 40 DC to 12.4 ±1.5 0880-3100 (7913358-1-2)

General Radio 6 DC to 12.5 At DC ±0.04

DC to 5 ±0.3 0880-3110 (7913358-2-2)

General Radio See 0880-3100 ±0.4


TB 9-4931-523-24

APPENDIX A

A-5



attenuation (dB)


Accuracy (dB)


(dB) 1 Weinschel See 1-10, 1-20,

1-3,1-30, and 1-6

1-10 Weinschel 10 DC to 12.4 ±0.5 1-10N(7911956) Weinschel 10 DC to 12.4 ±0.5 1-20 Weinschel 20 DC to 12.4 ±0.5 1-20N Weinschel 20 DC to 12.4 ±0.5 1-3 Weinschel 3 DC to 12.4 ±0.3 1-3N Weinschel 3 DC to 12.4 ±0.3 1-30 Weinschel 30 DC to 12.4 ±0.75 1044-18N Midwest

Mwave 0 to 69 DC to 18

DC to 4 ≤0.7 4 to 12.4 ≤1.0 12.4 to 18 ≤1.5

1 to 9 DC to 18 ±0.5 10 to 19 ±1.0 20 to 29 ±1.2 30 to 39 ±1.4 40 to 49 ±1.5 50 to 59 ±1.6 60 to 69 ±1.8

1100A PRD Electronics

3 DC to 4.0 ±0.3 at 1.2 GHz

1100B PRD Electronics

6 DC to 6.0 ±0.5

1100C (8520731)

PRD Electronics

10 DC to 4.0 ±1.0 at 1.2 GHz

11708A Hewlett-Packard

30 At 50 MHz ±0.05

118A4 Narda See 777C-3, 777C-6, 777C-10, and 777C-20 119A4 Narda See 757C-3, 757C-6, 757C-10, and 757C-20 12N-10 Inmet Corp 10 DC to 12.4 ±0.5 12N-20 Inmet Corp 20 DC to 12.4 ±0.75 12N-3 Inmet Corp 3 DC to 12.4 ±0.3 12N-6 Inmet Corp 6 DC to 12.4 ±0.3 13534006 Weinschel 40 DC to 4 ±0.4

4 to 8.5 ±0.75 18N-10 Inmet Corp 10 DC to 18 ±0.75 18N-10S Inmet Corp 10 DC to 18 ±0.75 18N-20 Inmet Corp 20 DC to 18 ±0.75 18N-30 Inmet Corp 30 DC to 18 ±0.75 18N-6 Inmet Corp 6 DC to 18 ±0.3


TB 9-4931-523-24

APPENDIX A

A-6



attenuation (dB)


Accuracy (dB)


190-599 Weinschel 50 DC to 18 ±1.0 2-10DB Weinschel 10 DC to 18 ±0.5 2-20DB Weinschel 20 DC to 18 ±0.5 2-3DB Weinschel 3 DC to 18 ±0.3 2-30DB Weinschel 30 DC to 18 ±1.0 2-6DB Weinschel 6 DC to 18 ±0.3 20-0 Kay Elemetrics 0 to 41 DC to 0.5

DC to 0.25 ±0.5 ≤0.1 0.25 to 0.5 ±1.2 ≤0.2

200045 Weinschel 10 DC to 5 ±0.5 20-20 Weinschel 20 DC to 18 ±0.5 219-10 Midwest

Mwave 10 DC to 18 ±0.5

219-20 Midwest Mwave

20 DC to 18 ±0.5

219-3 Midwest Mwave

3 DC to 18 ±0.3

219-6 Midwest Mwave

6 DC to 18 ±0.3

2082-4182-03

Omni Spectra 3 DC to 21.5 ±0.3

2701 Tektronix 0 to 79 DC to 1 ≤ -(0.5 + 0.14 dB/100 MHz)

Units error +0.1 to -0.5 Max error +0.1 to -0.7

1 0.01 to 1 +0.31 to -0.71 2 +032 to -0.72 4 +033 to -1.02 8 +0.36 to -1.34

10 ±0.58 20 ±0.66 30 ±0.74 40 ±0.92

2936 (7913175) Narda 5 to 90 0.95 to 1.25 ±9.0 5 to 20 ±0.5 20 to 40 ±0.3 40 to 70 ±0.5 70 to 90 ±0.75

30-0 Kay Elemetrics 0 to 101 DC to 0.5 DC to 0.25 ±1.0 ≤0.10 0.25 to 0.5 ±2.0 ≤0.20

32-0 Kay Elemetrics See 30-0 355C2 Hewlett-

Packard 0 to 12 DC to 1 See footnote 8

0.0001 ±0.1 DC to 0.5 ±0.25 0.5 to 1 ±0.35


TB 9-4931-523-24

APPENDIX A

A-7



attenuation (dB)


Accuracy (dB)


355D2 Hewlett-Packard

0 to 1203 DC to 1 <0.20 dB+2.30 dB/GHz

0.0001 ±0.3 0 to 90 <1 GHz ±1.5

90 to 1203 <1 GHz ±3.0 3750A Hewlett-

Packard (75 Ω) 0 to 99 DC to 0.1

0.05 ≤0.10.1 ≤0.04

Cumulative Units DC to 0.1 ±0.1 Tens ±0.2

0 to 79 ±0.55 0 to 89 ±1.0 0 to 99 ±2.0

389-10 Midwest Mwave

10 DC to 18 ±0.5

389-3 Midwest Mwave

3 DC to 18 ±0.3

3M Weinschel 1 to 10 DC to 12.4 ±0.3 20 ±0.5

30 and 40 ±0.75 50 and 60 ±1.0

4108-10DB ITT Electronics 10 DC to 8 ±0.5 4108-20DB ITT Electronics 20 DC to 8 ±0.5 4108-3DB ITT Electronics 3 DC to 8 ±0.5 4108-6DB ITT Electronics 6 DC to 8 ±0.5 432D Kay Elemetrics 0 to 101 DC to 1

DC to 0.25 ±0.6 ≤0.10.25 to 0.5 ±1.2 ≤0.2

0.5 to 1 ±2.0 ≤0.644-20 Weinschel 20 DC to 18 ±0.5 44-30 Weinschel 30 DC to 18 ±1.0 44-6 Weinschel 6 DC to 18 ±0.3 44-60 Weinschel 60 DC to 18 ±1.5 442D Kay Elemetrics

(75 Ω) 0 to 101 DC to 1

DC to 0.25 ±1.0 ≤0.10.25 to 0.5 ±1.2 ≤0.2

0.5 to 1 ±2.0 ≤0.4464A (MIS-10263)

Kay Elemetrics See RLC Electronics A2648B

467A Kay Elemetrics 0 to 12 DC to 1.5 <0.05dB/100 MHz

DC to 1 ±0.3 1 to 1.5 ±0.5

49-20-33 Weinschel 20 DC to 8.5DC to 4 ±0.4 4 to 8.5 ±0.7

49-40-34 Weinschel 40 DC to 8.5DC to 4 ±0.5 4 to 8.5 ±1.0


TB 9-4931-523-24

APPENDIX A

A-8



attenuation (dB)


Accuracy (dB)


50-1 Weinschel 1 DC to 3.0 ±0.2 50-10 Weinschel 10 DC to 3.0 ±0.2 50-2 Weinschel 2 DC to 3.0 ±0.2 50-20 Weinschel 20 DC to 3.0 ±0.2 50-3 Weinschel 3 DC to 3.0 ±0.2 50-6 Weinschel 6 DC to 3.0 ±0.2 50CV120-726 Alan Inc 0 to 1203 DC to 1 ±0.5 or 2%


<1.0

50MP10-1100 Alan Inc 10 DC to 18 ±0.5 50MP30-864 Alan Inc 30 DC to 18 ±1.0 50TA101-377 Alan Inc 0 to 101 DC to 1 ±2.0 ≤1.0 50TA101-814 Alan Inc 0 to 101 DC to 1 ±0.2 or 2%


50TA102-261 Alan Inc 0 to 102 DC to 0.3 DC to 0.1 ≤1.0 0.1 to 0.2 ≤1.5 0.2 to 0.3 ≤2.0

DC to 0.05 ±0.05 or 1% 0.05 to 0.2 ±0.2 or 1% 0.2 to 0.3 ±0.5

530-10 Weinschel 10 1 to 12.4 4 ±0.1 1 0, -0.87

10 +0.5, -0.17 530-20 Weinschel 20 2 to 12.4

4 ±0.2 2 0, -0.97

10 +0.4, -0.17 530-3 Weinschel 3 0.6 to 12.4

4 ±0.1 1 0, -0.27

10 +0.2 -0.17 530-7 Weinschel 7 1 to 12.4

4 ±0.1 1 0, -0.67

10 +0.3, -0.17 5729-30 See 44-30 60562 Waveline 0 to 60 8.2 to 12.4 1 dB max 0.5

dB typical 0 to 50 0.1 or ±2%


50 to 60 REF only 611 Waveline 0 to 30 8.2 to 12.4 ±0.5 ≤0.5 See footnotes at end of table.

TB 9-4931-523-24

APPENDIX A

A-9



attenuation (dB)


Accuracy (dB)


(dB) 64A Weinschel 0 to 64 DC to 2

1 ≤0.4 2 ≤0.5

Range A: 3 to 3.9

1 and 2 ±0.7

Range B: 1 to 5 1 and 2 ±0.12 Range B: 6 to 10

1 and 2 ±0.15

Range C: 10 to 50

1 and 2 ±0.15 for the 10dB step,

±0.1/10dB +0.1 for 20 to 50dB

step 711 Waveline 0 to 30 12.4 to 18 ±0.5 ≤0.5 749B Narda 0 to 40 12.4 to 18 ±0.3 ≤0.5 757-10 Narda 10 1 to 12.4 ±0.17

1 +0 to -1.1 2 +0 to -0.7 3 ±1.0 7 +0.6 to -0.1

12.4 +1.3 to -0 757-20 Narda 20 1 to 12.4 ±0.27

2 +0 to -1.2 3 ±0.2 7 +1.3 to -0.2

12.4 +1.9 to -0 757-3 Narda 3 0.6 to 12.4 ±0.17

1 +0 to -0.3 2 +0 to -0.2 3 1.0 7 +0.2 to -0.1

12.4 +0.5 to -0 757-6 Narda 6 1 to 12.4 ±0.17

1 +0 to -0.6 2 +0 to -0.5 3 ±0.1 7 +0.4 to -0.1

12.4 +0.7 to -0 757C10 Narda 10 DC to 12.4

DC to 6 ±0.3 6 to 12.4 ±0.5

757C20 Narda 20 DC to 12.4 DC to 6 ±0.3 6 to 12.4 ±0.5


TB 9-4931-523-24

APPENDIX A

A-10



attenuation (dB)


Accuracy (dB)


(dB) 757C3 Narda 3 DC to 12.4 ±0.3 757C40 Narda 40 DC to 12.4

DC to 6 ±1.0 6 to 12.4 ±1.25

757C6 Narda 6 DC to 12.4 ±0.3 765-10 Narda 10 DC to 5

DC to 3 ±0.25 3 to 5 ±0.5

765-20 Narda 20 DC to 5 DC to 3 ±0.25 3 to 5 ±0.5




766-30 Narda 30 DC to 4 ±0.75 768-10 Narda 10 DC to 11

DC to 3 ±0.25 3 to 6 ±0.50

6 to 11 ±0.75 768-20 Narda 20 DC to 11

DC to 3 ±0.25 3 to 6 ±0.50

6 to 11 ±0.75 768-3 Narda 3 DC to 11

DC to 3 ±0.25 3 to 6 ±0.50

6 to 11 ±0.75 768-30 Narda 30 DC to 11

DC to 3 ±0.25 3 to 6 ±0.50

6 to 11 ±0.75 769-30 Narda 30 DC to 6

DC to 2 ±0.5 2 to 6 ±1.0



TB 9-4931-523-24

APPENDIX A

A-11



attenuation (dB)


Accuracy (dB)


(dB) 773-3 Narda 3 DC to 6

DC to 3 ±0.3 3 to 6 ±0.5


777C10 Narda 10 DC to 12.4 ±0.3 777C20 Narda 20 DC to 12.4 ±0.3 777C3 Narda 3 DC to 12.4 ±0.3 777C6 Narda 6 DC to 12.4 ±0.3 779-10 Narda 10 DC to 18

DC to 12.4 ±0.3 12.4 to 18 ±0.5

779-20 Narda 20 DC to 18 DC to 12.4 ±0.5 12.4 to 18 ±0.7

779-3 Narda 3 DC to 18 ±0.3 779-6 Narda 6 DC to 18 ±0.3 7913358-1-2 See General Radio 0880-3100 7913358-2-2 See General Radio 0880-3110 7916821-1 3 DC to 18 ±0.3 7916821-2 6 DC to 18 ±0.3 7916821-4 20 DC to 18 ±0.5 7916821-5 30 DC to 18 ±1.0 7916821-8 60 DC to 18 ±1.5 793FM Narda 0 to 20 4 to 8 ±1.5 ≤1.5 794FM Narda 0 to 40 4 to 8 ±1.5 ≤1.5 8144A-102 Telonic See MIS-38936 8322 Bird

Electronics 30 DC to 0.5 ±0.5

8323 Bird Electronics

30 DC to 0.5 ±0.5


30 DC to 0.5 ±0.5


30 DC to 0.5 ±0.5

8329-300 Bird Electronics

30 DC to 0.5 ±0.5


TB 9-4931-523-24

APPENDIX A

A-12



attenuation (dB)


Accuracy (dB)


(dB) 839 Kay Elemetrics 0 to 101 DC to 3

1.0 to 20 dB steps

DC to 0.25 ±0.1 <0.2

1.0 to 10 dB steps

0.25 to 1 ±0.2 <0.4

20 dB steps 0.25 to 1 ±0.3 1.0 to 10 dB

steps 1 to 2 ±0.3 <0.7

20 dB steps 1 to 2 ±0.5 1.0 to 10 dB

steps 2 to 3 ±0.6 <1.0

20 dB steps 2 to 3 ±0.8 84904K Agilent 0 to 11 DC to 26.5 ≤0.8 + 0.04/GHz

1 DC to 18 ±0.35 2 ±0.45

3 to 6 ±0.55 7 to 8 ±0.60

9 ±0.65 10 ±0.70 11 ±0.80 1 18 to 26.5 ±0.40 2 ±0.50

3 to 6 ±0.70 7 to 8 ±0.80

9 ±0.85 10 ±0.90 11 ±1.10

84904L Agilent 0 to11 DC to 26.5 ≤0.8 + 0.04/GHz 1 DC to 18 ±0.35 2 ±0.45

3 to 6 ±0.55 7 to 8 ±0.6

9 ±0.65 10 ±0.7 11 ±0.8 1 18 to 26.5 ±0.4 2 ±0.5

3 to 6 ±0.7 7 to 8 ±0.8

9 ±0.85 10 ±0.9 11 ±1.1


TB 9-4931-523-24

APPENDIX A

A-13



attenuation (dB)


Accuracy (dB)


(dB) 84906K Agilent 0 to 90 DC to 40 ≤0.8 + 0.04/GHz

10 ±0.5 20 ±0.6 30 ±0.7 40 ±1.0 50 ±1.2 60 ±1.6 70 ±1.8 80 ±2.7 90 ±2.9

84906L Agilent 0 to 90 DC to 40 ≤0.8 + 0.04/GHz 10 ±0.5 20 ±0.6 30 ±0.7 40 ±1.0 50 ±1.2 60 ±1.6 70 ±1.8 80 ±2.7 90 ±2.9

8490D10DB Hewlett-Packard

10 DC to 50 DC to 26.5 -0.6 to +0.9 26.5 to 50 -0.6 to +1.3

8490D20DB Hewlett-Packard

20 DC to 50 DC to 26.5 -0.8 to+1.3 26.5 to 50 -0.8 to +1.7

8491A10DB Hewlett-Packard

10 DC to 12.4 ±0.5


20 DC to 12.4 ±0.5


30 DC to 12.4 ±1.0


3 DC to 12.4 ±0.3


40 DC to 12.4 ±1.5


6 DC to 12.4 ±0.3

8491B010 Hewlett-Packard

10 See 8491B10


30 See 8491B30


50 DC to 18 ±1.5


TB 9-4931-523-24

APPENDIX A

A-14



attenuation (dB)


Accuracy (dB)


(dB) 8491B10 Hewlett-

Packard 10 DC to 18 ±0.6


20 DC to 18 DC to 12.4 ±0.6 12.4 to 18 ±1.0


30 DC to 18 ±1.0


3 DC to 18 ±0.3


6 DC to 18 DC to 12.4 ±0.3 12.4 to 18 ±0.54

8492A003 Hewlett-Packard

3 DC to 18 ±0.3


6 DC to 18 DC to 12.4 ±0.3 12.4 to 18 ±0.54


10 DC to 18 ±0.6


20 DC to 18 DC to 12.4 ±0.6 12.4 to 18 ±1.0


50 DC to 18 ±1.5


30 DC to 12.4 ±1.0


6 DC to 18 DC to 12.4 ±0.3 12.4 to 18 ±0.4


10 DC to 18 ±0.6


20 DC to 18 DC to 12.4 ±0.6 12.4 to 18 ±1.0

8493C10 Hewlett-Packard

10 DC to 26.5 DC to 18 ±0.3 18 to 26.5 ±0.5


20 DC to 26.5 DC to 18 ±0.5 18 to 26.5 ±0.6


TB 9-4931-523-24

APPENDIX A

A-15



attenuation (dB)


Accuracy (dB)


(dB) 8493C3 Hewlett-

Packard 3 DC to 26.5

DC to 18 ±0.5 18 to 26.5 ±1.0


6 DC to 26.5 ±0.6

8494A (All Options)

Hewlett-Packard

0 to 11 DC to 4.0 <0.6 dB +0.09 dB/ GHz

±0.2 ±0.2 ±0.3 ±0.3 ±0.3 ±0.3 ±0.4 ±0.4 ±0.4 ±0.4 ±0.5

8494B Hewlett-Packard

0 to 11 DC to 18 <0.6 dB +0.09 dB/ GHz

1 DC to 12.4 ±0.3 12.4 to 18 ±0.7

2 DC to 12.4 ±0.3 12.4 to 18 ±0.7

3 DC to 12.4 ±0.4 12.4 to 18 ±0.7

4 DC to 12.4 ±0.4 12.4 to 18 ±0.7

5 DC to 12.4 ±0.5 12.4 to 18 ±0.7

6 DC to 12.4 ±0.5 12.4 to 18 ±0.8

7 DC to 12.4 ±0.6 12.4 to 18 ±0.8

8 DC to 12.48 ±0.6 12.4 to 18 ±0.8

9 DC to 12.4 ±0.6 12.4 to 18 ±0.8

10 DC to 12.4 ±0.6 12.4 to 18 ±0.9

11 DC to 12.4 ±0.7 12.4 to 18 ±0.9


TB 9-4931-523-24

APPENDIX A

A-16



attenuation (dB)


Accuracy (dB)



See 8494B


0 to 70 DC to 18 ±0.4 dB +0.07 dB/GHz

DC to 12.4 ±3% of setting 12.4 to 18 ±4% of setting

8495D Hewlett-Packard

0 to 70 DC to 26.5 ±0.5 dB +0.13 dB/GHz

DC to 12.4 ±3% of setting 12.4 to 18 ±4% of setting 18 to 26.5 ±7% of setting


0 to 110 DC to 4 ± 0.4 or ±1.7% whichever is

greater

±0.6 dB +0.09 dB/GHz

8496B Hewlett-Packard

0 to 110 DC to 18 ±0.6 dB +0.09 dB/GHz

DC to 12.4 ±3% of setting 12.4 to 18 ±4% of setting

8498A030 Agilent 30 DC to 18 ±1.0 8420731 See PRD Electronics 1100C 951054-2 Boonton 20 DC to 4 ±0.5 9918-302 Weinschel 30 DC to 18 ±1.0 9918-602 Weinschel 60 DC to 18 ±1.5 9918-32 Weinschel 3 DC to 18 ±0.3 9918-62 Weinschel 6 DC to 18 ±0.3 9918-102 Weinschel 10 DC to 18 ±0.5 9918-202 Weinschel 20 DC to 18 ±0.5

1 Not calibrated below 10 MHz using this TB. 2 Prepare test report for this item using receiver system indications for system codes: U04, U06, U10, U11, Ul2, U14, F00

and W05. 3 Not checked below -100 dB. 4 Accuracy of measuring receiver must be considered as well as losses associated with any adapter used. 5 Some attenuation settings (>30 dB) will result in accuracy ratios between standard and TI to be <4:1. 6 This is a flatness specification. The maximum recorded attenuation value minus the minimum recorded attenuation value

for each setting will be less than or equal to this accuracy. 7 Deviation from value measured at 4 GHz. 8 Insertion loss for serial number 2524A44630 and below is ±(0+0.11+1.39 (frequency in GHz). Insertion loss for serial

number 2524A44630 and above is ±(0+0.2 + 2.3 (frequency in GHz).

Distribution: Initially published in electronic media only. If at a later date this publication is printed, it will be distributed in accordance with the initial distribution number (IDN) 342070, requirements for calibration procedure TB 9-4931-523-24.

GERALD B. O’KEEFE Administrative Assistant to the

Secretary of the Army 1333606

By Order of the Secretary of the Army:

RAYMOND T. ODIERNO General, United States Army

Chief of Staff Official:

Instructions for Submitting an Electronic 2028 The following format must be used if submitting an electronic 2028. The subject line must be exactly the same and all fields must be included; however, only the following fields are mandatory: 1, 3, 4, 5, 6, 7, 8, 9, 10, 13, 15, 16, 17, and 27.

From: "Whomever" [email protected] To: <[email protected]

Subject: DA Form 2028 1. From: Joe Smith 2. Unit: home 3. Address: 4300 Park 4. City: Hometown 5. St: MO 6. Zip: 77777 7. Date Sent: 19-OCT –93 8. Pub no: 55-2840-229-23 9. Pub Title: TM 10. Publication Date: 04-JUL-85 11. Change Number: 7 12. Submitter Rank: MSG 13. Submitter FName: Joe 14. Submitter MName: T 15. Submitter LName: Smith 16. Submitter Phone: 123-123-1234 17. Problem: 1 18. Page: 2 19. Paragraph: 3 20. Line: 4 21. NSN: 5 22. Reference: 6 23. Figure: 7 24. Table: 8 25. Item: 9 26. Total: 123 27. Text This is the text for the problem below line 27.

PIN: 085048-000

*tb 9-4931-523-24

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